{"product_id":"irwin-225134-c-clamp-3-in-4-5-in-throat-cast-iron-regular-duty","title":"Irwin 225134 C-clamp 3 in 4.5 in Throat Cast Iron Regular Duty","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IRWIN 225134 is a regular-duty C-clamp built for holding, clamping, and positioning work in trade and industrial applications. The cast iron body provides rigid clamping force up to 750 pounds of load capacity. A 3-inch maximum opening and a deep throat depth of 4.5 inches make this clamp well suited for reaching into workpieces where standard throat depth falls short. The 0.5-inch-diameter screw delivers controlled clamping pressure. This clamp is a standard bench and field tool for HVAC fabricators, pipefitters, electricians, and general trade contractors who need reliable holding force during assembly or installation tasks.\u003c\/p\u003e\u003cp\u003eThis clamp is used in residential and commercial trade applications where a secure temporary hold is needed during welding, fastening, gluing, or fitting work. The deep throat design extends reach beyond the edge of the material, which is especially useful when clamping ductwork flanges, pipe hangers, strut, or structural steel during assembly. The regular-duty rating makes it appropriate for light to moderate clamping tasks rather than heavy-press or production-line use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3-inch maximum opening capacity handles a wide range of material thicknesses\u003c\/li\u003e\n\u003cli\u003e4.5-inch deep throat depth provides extended reach into the workpiece\u003c\/li\u003e\n\u003cli\u003e750-pound load capacity delivers firm, stable clamping force\u003c\/li\u003e\n\u003cli\u003eCast iron body resists deformation under sustained clamping load\u003c\/li\u003e\n\u003cli\u003e0.5-inch screw diameter for controlled pressure application\u003c\/li\u003e\n\u003cli\u003eRegular-duty rating suitable for general trade and fabrication tasks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard regular-duty C-clamp for general trade, fabrication, and installation use where a 3-inch opening and 4.5-inch deep throat are required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eC-clamps are installed and removed by hand or with a wrench on the screw handle — no power tools are required. Always verify the clamping surfaces are clean and properly aligned before applying load. Do not exceed the rated 750-pound load capacity. When used near electrical work, confirm power is isolated before applying the clamp to any energized or adjacent components.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Opening Capacity\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Opening Capacity\u003c\/strong\u003e: 0 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThroat Depth\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThroat Depth Style\u003c\/strong\u003e: Deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Capacity\u003c\/strong\u003e: 750 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuty Rating\u003c\/strong\u003e: Regular-Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IRWIN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 225134\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51540883636530,"sku":"225134","price":37.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64ba1d7a9537e1fb9e9205c0ca178b7b.jpg?v=1785865394","url":"https:\/\/voomisupply.com\/products\/irwin-225134-c-clamp-3-in-4-5-in-throat-cast-iron-regular-duty","provider":"Voomi Supply","version":"1.0","type":"link"}